//	CopyCat Battle Tank
//
//	Author	Matthew Caryl
//	Created 5.4.97

package CopyCat;

import java.awt.*;
import ADT.*;
import java.net.*;
import java.lang.*;
import java.applet.*;
import java.io.*;

public final class Tank extends Entity {
	//
	// Private interface
	//
	
	private static Vector[]	vs;
	private static int[]	ts;
	private static Color[]	cs;
	
	static {
		vs = new Vector[14];
		vs[ 0] = new Vector( -90f, -200f,  40f);
		vs[ 1] = new Vector(  90f, -200f,  40f);
		vs[ 2] = new Vector( 100f,  200f,  50f);
		vs[ 3] = new Vector(-100f,  200f,  50f);
		vs[ 4] = new Vector(-100f, -200f, -50f);
		vs[ 5] = new Vector( 100f, -200f, -50f);
		vs[ 6] = new Vector( 100f,  200f, -50f);
		vs[ 7] = new Vector(-100f,  200f, -50f);
		vs[ 8] = new Vector(   0f, -180f,  70f);
		vs[ 9] = new Vector(  20f, -180f,  60f);
		vs[10] = new Vector( -20f, -180f,  60f);
		vs[11] = new Vector(   0f,   90f,  70f);
		vs[12] = new Vector(  20f,   90f,  60f);
		vs[13] = new Vector( -20f,   90f,  60f);
		ts = new int[20 * 3];
		ts[ 0] = 0;  ts[ 1] = 1;  ts[ 2] = 2;
		ts[	3] = 2;  ts[ 4] = 3;  ts[ 5] = 0;
		ts[	6] = 4;  ts[ 7] = 7;  ts[ 8] = 6;
		ts[	9] = 6;  ts[10] = 5;  ts[11] = 4;
		ts[12] = 1;  ts[13] = 5;  ts[14] = 6;
		ts[15] = 6;  ts[16] = 2;  ts[17] = 1;
		ts[18] = 0;  ts[19] = 3;  ts[20] = 7;
		ts[21] = 7;  ts[22] = 4;  ts[23] = 0;
		ts[24] = 3;  ts[25] = 2;  ts[26] = 6;
		ts[27] = 6;  ts[28] = 7;  ts[29] = 3;
		ts[30] = 0;  ts[31] = 4;  ts[32] = 5;
		ts[33] = 5;  ts[34] = 1;  ts[35] = 0;
		ts[36] =  8; ts[37] =  9; ts[38] = 10;
		ts[39] = 11; ts[40] = 12; ts[41] = 13;
		ts[42] =  8; ts[43] = 10; ts[44] = 13;
		ts[45] = 13; ts[46] = 11; ts[47] =  8;
		ts[48] =  9; ts[49] =  8; ts[50] = 11;
		ts[51] = 11; ts[52] = 12; ts[53] =  9;
		ts[54] =  9; ts[55] = 12; ts[56] = 13;
		ts[57] = 13; ts[58] = 10; ts[59] =  9;
		cs = new Color[20];
		cs[0] = new Color(0x308000);
		for (int i = 1; i < 12; i++)
			cs[i] = cs[i - 1];
		cs[12] = new Color(255, 0, 0);
		for (int i = 13; i < 20; i++)
			cs[i] = cs[i - 1];
		}
	
	private float		x, y;
	private float		heading;
	private Controller	controls;
	
	private void turn(float angle) {
		heading += angle;
		if (heading < -Math.PI)
			heading += 2 * Math.PI;
		else if (heading > Math.PI)
			heading -= 2 * Math.PI;
		turnTo(0f, 0f, heading);
		}
	
	private void move(float distance) {
        x -= (float) Math.sin(heading) * distance;
        y -= (float) Math.cos(heading) * distance;
        moveTo(x, y, 0f);
		}
	
	//
	// Public interface
	//
	
	public static final int FORWARD = 0;
	public static final int BACKWARD = 1;
	public static final int CLOCKWISE = 2;
	public static final int ANTICLOCKWISE = 3;
	
	public Tank(Controller C) {
		super(vs, ts, cs, null);
		controls = C;
		}
	
	public void tick() {
		float distance = 0f;
		if (controls.transfer(FORWARD))
			distance += 10f;
		if (controls.transfer(BACKWARD))
			distance -= 10f;
		if (distance != 0f)
			move(distance);
		
		float angle = 0f;
		if (controls.transfer(CLOCKWISE))
			angle += 0.03f;
		if (controls.transfer(ANTICLOCKWISE))
			angle -= 0.03f;
		if (angle != 0f)
			turn(angle);
		}
	
	public float x() {
		return x;
		}
	
	public float y() {
		return y;
		}
	
	public float heading() {
		return heading;
		}
	}